教育的目的应该是教我们如何思考，而不是思考什么——更应该是改善我们的思维，使我们能够独立思考，而不是用别人的思想来填充记忆。
The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.
I don't create utopias, I depict reality.
I had ambition not only to go farther than any man had been before, but as far as it was possible for a man to go.
La vida es una novela que cada uno escribe con sus propias decisiones.
Die Wahrheit ist oft unwahrscheinlicher als die Fiktion.
The moment you doubt whether you can fly, you cease for ever to be able to do it.